Greatest Common Factor of 783, 822, 21

Greatest common factor or Greatest common divisor (GCD) can be calculated in two ways

• Greatest Common Factor of 783, 822, 21 by common division method
• Greatest Common Factor of 783, 822, 21 with matching the biggest common factor

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∴ So the GCF of the given numbers is 3 = 3

Factors of 783

List of positive integer factors of 783 that divides 783 without a remainder.

1,3,9,27,29,87,261,783

Factors of 822

List of positive integer factors of 822 that divides 822 without a remainder.

1,2,3,6,137,274,411,822

Factors of 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Greatest Common Factor

We found the factors 783,822,21 . The biggest common factor number is the GCF number.
So the greatest common factor 783,822,21 is 3.

Here are some samples of GCF of two or more Numbers calculations.

• GCF of 159, 394, 42
• GCF of 243, 528, 78
• GCF of 886, 926, 35
• GCF of 307, 268, 66
• GCF of 992, 357, 23

1. What is the GCF of 783, 822, 21?

Answer: GCF of 783, 822, 21 is 3.

2. How to Find the GCF of 783, 822, 21

Answer: Greatest Common Factor(GCF) of 783, 822, 21 = 3

Step 1: Divide all the numbers with common prime numbers having remainder zero.

Step 2: Then multiply all the prime factors GCF(783, 822, 21) = 3.